import {
  Card,
  Breadcrumb,
  Form,
  Button,
  Radio,
  Input,
  Upload,
  Space,
  Select,
  message
} from 'antd'
import { PlusOutlined } from '@ant-design/icons'
import './index.scss'
import ReactQuill from 'react-quill-new'
import 'react-quill-new/dist/quill.snow.css'
import { useEffect, useState } from 'react'
import { createArticleAPI, getArticleByIdAPI, updateArticleAPI } from '@/apis/article'
import { useChannel } from '@/hooks/useChannel'
import { useSearchParams } from 'react-router-dom'

const { Option } = Select

const Publish = () => {

  const items = [
    {
      title: '首页',
      href: '/'
    },
    { title: ':text' }
  ]

  // 获取频道列表
  const { channelList } = useChannel()

  // 提交提示
  const [messageApi, contextHolder] = message.useMessage();

  // 提交表单
  const onFinish = (formValue) => {
    // 校验封面类型imageType是否和实际图片列表imageList数量是否相等
    if (imageType !== imageList.length && imageType !== 0) return message.warning('封面类型和图片数量不匹配')
    const { title, content, channel_id } = formValue
    // 1.按照接口文档的格式处理收集到的表单数据
    const reqData = {
      title,
      content,
      cover: {
        type: imageType,  // 封面模式
        // 此处url处理逻辑在编辑提交时需要进行处理
        images: imageType === 0 ? [] : imageList.map(item => {
          return item.response ? item.response.data.url : item.url
        }
        )
      },
      channel_id
    }
    // 2.调用接口提交
    // 处理调用不同的接口 新增 - 新增接口 编辑状态 - 更新接口（根据id进行判断）
    articleId ? updateArticleAPI({ ...reqData, id: articleId }) : createArticleAPI(reqData)
    messageApi.open({
      type: 'success',
      content: '提交成功'
    });
  }

  // 上传回调
  const [imageList, setImageList] = useState([])

  const onUploadChange = (value) => {
    setImageList(value.fileList)
  }

  // 切换图片封面类型
  const [imageType, setImageType] = useState(0)
  const onTypeChange = (e) => {
    setImageType(e.target.value)
  }

  // 回填数据
  const [searchParams] = useSearchParams()
  const articleId = searchParams.get('id')

  // 获取from实例
  const [form] = Form.useForm()

  useEffect(() => {
    // 1.通过id获取数据
    async function getArticleDetail() {
      await getArticleByIdAPI(articleId).then((res) => {
        const { data } = res.data
        const { cover } = data
        // 回填部分数据
        form.setFieldsValue({
          ...data,
          type: data.cover.type
        })

        // 回填图片列表
        setImageType(cover.type)
        // 回填图片
        setImageList(cover.images.map(url => {
          return { url }
        }))
      }).catch((error) => {
        console.log(error.status);
      })
    }

    // 2.在有id的前提下 调用实例方法 完成回填
    if (articleId) getArticleDetail()
  }, [articleId, form])


  return (
    <div className="publish">
      {contextHolder}
      <Card
        title={
          <Breadcrumb separator=">" items={items} params={{ text: articleId ? '编辑文章' : '发布文章' }} />
        }
      >
        <Form
          labelCol={{ span: 4 }}
          wrapperCol={{ span: 16 }}
          initialValues={{ type: imageType }}
          onFinish={onFinish}
          form={form}
        >
          <Form.Item
            label="标题"
            name="title"
            rules={[{ required: true, message: '请输入文章标题' }]}
          >
            <Input placeholder="请输入文章标题" style={{ width: 400 }} />
          </Form.Item>
          <Form.Item
            label="频道"
            name="channel_id"
            rules={[{ required: true, message: '请选择文章频道' }]}
          >
            <Select placeholder="请选择文章频道" style={{ width: 400 }}>
              {/* value属性用户选中之后会自动收集起来作为接口的提交字段 */}
              {channelList.map(item => <Option key={item.id} value={item.id}>{item.name}</Option>)}
            </Select>
          </Form.Item>

          <Form.Item label="封面">
            <Form.Item name="type">
              <Radio.Group onChange={onTypeChange}>
                <Radio value={1} disabled={imageList.length > 1}>单图</Radio>
                <Radio value={3}>三图</Radio>
                <Radio value={0}>无图</Radio>
              </Radio.Group>
            </Form.Item>
            {/* 
              listType: 决定选择文件框的外观样式
              showUploadList: 控制显示上传列表
             */}
            {imageType > 0 && <Upload
              name="image"
              listType="picture-card"
              className="avatar-uploader"
              showUploadList
              action="http://geek.itheima.net/v1_0/upload"
              fileList={imageList}
              onChange={onUploadChange}
              maxCount={imageType}
            >
              <div style={{ marginTop: 3 }}>
                <PlusOutlined />
              </div>
            </Upload>
            }

          </Form.Item>
          <Form.Item
            label="内容"
            name="content"
            rules={[{ required: true, message: '请输入文章内容' }]}
          >
            {/* 富文本编辑器 */}
            <ReactQuill
              className="publish-quill"
              theme="snow"
              placeholder="请输入文章内容"
            />
          </Form.Item>

          <Form.Item wrapperCol={{ offset: 4 }}>
            <Space>
              <Button size="large" type="primary" htmlType="submit">
                {articleId ? '编辑' : '发布'}文章
              </Button>
            </Space>
          </Form.Item>
        </Form>

      </Card>
    </div>
  )
}

export default Publish